Tim S writes:

Jon Fairbairn coughed up some electrons that declared:

.. [Miele hoses]
I thought they were volume limiting rather than just
non-return valves, which gives more excuse for the size.


Nearly - they are an electric valve and the hose is a hose within a hose,
with a water leak sensor in the outer hose. So if the inner hose springs a
leak, the valve is shut off.

Ah, so that's what they mean by "waterproof hose"! I did wonder...

--
Jón Fairbairn
http://www.chaos.org.uk/~jf/Stuff-I-dont-want.html (updated 2009-01-31)